Cushion mechanism for a positive peck feed drill
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United States of America Patent
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Issued Date -
May 6, 2010
app pub date -
Oct 31, 2008
filing date -
Oct 31, 2008
priority date (Note) -
Abandoned
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Abstract
A cushion mechanism in a positive feed drill slows the advancement of a cutter prior to reconnecting with a machining surface during a clearing operation. The cushion mechanism may be inserted in a piston, in front of a shaft, or attached to the outside of the positive feed drill. The cushion mechanism may include a spring washer, a compression spring, or a hydraulic or pneumatic damper. The cushion mechanism provides a safer and more efficient operation for positive peck drilling.
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